noun
- Any long and arduous undertaking.
- synonyms: endurance contest
- A footrace of 26 miles 385 yards.
- A battle in 490 BC in which the Athenians and their allies defeated the Persians.
- synonyms: battle of Marathon
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Marathon. Retrieved September 20, 2026, from http://smartdefine.org/marathon/definitions/1194152 |
| Chicago | WordNet. 2010. "Marathon" http://smartdefine.org/marathon/definitions/1194152 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Marathon, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/marathon/definitions/1194152>. |
| MLA | WordNet. "Marathon" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/marathon/definitions/1194152> |